Ikelic - Alliance Digital Repository

STATUS OF COAL PROJECTS (Underline denotes changes since June 1994)
COMMERCIAL AND R&D PROJECTS (Continued)
SHANGHAI - CHEMICALS FROM COAL PLANT People's
Republic of China (C-525)
The Chinese government has approved construction of a new methanol complex. Using coal as raw material, the Shanghai-based
plant is expected to produce 100,000 tons per year of methanol and 15,000 tons per year of acetate fiber. Completion is due in
1992.
SHOUGANG COAL - GASIFICATION PROJECT People's
Republic of China (C-527)
The Shougang plant will gasify 1,170 tons per day of Chinese anthracite using the Texaco coal gasification process. The gasification
plant will produce fuel gas for an existing steel mill and town gas. The detailed design is being completed and equipment fabrica
tion is underway. The plant is expected to be operational in late 1992.
SLAGGING - GASIFIER PROJECT British
Gas fjc (C-540)
British Gas Pic, with the cooperation of Lurgi. constructed a prototype high pressure slagging fixed bed gasifier (the BGL gasifier)
in 1974 at Westfield, Scotland. (This gasifier has a 6 foot diameter and a throughput of 300 tons per day.) The plant successfully
operated on a wide range of British and American coals, including strongly caking and highly swelling coals. The ability to use a
considerable proportion of fine coal in the feed to the top of the gasifier has been demonstrated as well as the injection of further
quantities of fine coal through the tuyeres into the base of the gasifier. Byproduct hydrocarbon oils and tars can be recycled and
gasified to extinction. The coal is gasified in steam and oxygen. The slag produced is removed from the gasifier in the form of
granular frit. Gasification is substantially complete with a high thermal efficiency. A long term proving run on the gasifier was
carried out successfully between 1975 and 1983. Total operating time was over one year and over 100,000 tons of coal were gasified.
A second phase, started in November 1984, was the demonstration of a 500 ton per day (equivalent to 70 megawatts) gasifier with a
nominal inside diameter of 7.5 feet. Power generation tests were carried out with an SK 30 Rolls Royce Olympus turbine to gener
ate power for the grid. The turbine is supplied with product gas from the plant. By 1989 this gasifier had operated for ap
proximately 1,300 hours and had gasified over 26,000 tons of British and American (Pittsburgh No. 8 and Illinois No. 6) coals.
The 500-ton per day gasifier was operated at 25 bar until the end of 1990.
An experimental gasifier designed to operate in the fixed bed slagger mode at pressure up to 70 atmospheres was constructed in
1988. It was designed for a throughput of 200 tons per day. This unit was operated through 1991. Operation of the gasifier was ex
cellent over the entire pressure range; the slag was discharged automatically, and the product gas was of a consistent quality. At
corresponding pressures and loadings the performance of the 200-ton per day gasifier was similar to that of the 500-ton per day
unit previously used.
As the pressure rises, the gas composition shows a progressive increase in methane and a decrease in hydrogen and ethtylene, while
the ethane remains fairly constant. The tar yield as a percentage of the dry ash free coal decreases with pressure. The cold gas ef
ficiency, i.e., the proportion of the fuel input converted to potential heat in the output gas, was above 90 percent. The throughput
increased approximately with the square root of the ratio of the operating pressures.
BGL is now cooperating with Duke Energy and other partners in the USA to develop a first commercial IGCC project based upon
the BGC gasifier under the U.S. Department of Energy's Clean Coal Technology V Program.
Project Cost: Not available
SYNTHESEGASANLAGE RUHR (SAR)
- Ruhrkohle
Oel and Gas GmbH and Hoechst AG (C-560)
Based on the results of the pressurized coal-dust gasification pilot plant using the Texaco process, which has been in operation
from 1978 to 1985, the industrial gasification plant Synthesegasanlage Ruhr has been completed on Ruhrchemie's site at
Oberhausen-Holten.
The 800 tons per day coal gasification plant has been in operation since August 1986. The coal gases produced have the quality to
be fed into the Ruhrchemie's oxosynthesis plants. The gasification plant has been modified to allow for input of either hard coal or
heavy oil residues. The initial investment was subsidized by the Federal Minister of Economics of the Federal Republic of Ger
many. The Minister of Economics, Small Business and Technology of the State of North-Rhine Westphalia participates in the coal
costs.
Project Costs: DM220 million (Investment)
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SYNTHETIC FUELS REPORT, JANUARY 1995